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NAMIBIA UNIVERSITY OF SCIENCE AND TECHNOLOGY

FACULTY OF COMPUTING AND INFORMATICS

DEPARTMENT OF COMPUTER SCIENCE

QUALIFICATION: BACHELOR OF COMPUTER SCIENCE

QUALIFICATION CODE: 07BACS LEVEL: 7

COURSE: SYSTEM VIRTUALISATION COURSE CODE: SVT710S

DATE: JUNE 2019 PAPER: THEORY

DURATION: 3 HOURS MARKS: 65

FIRST OPPORTUNITY EXAMINATION QUESTION PAPER

EXAMINER(S) MR. SHOOPALA NAMBAHU

MODERATOR: MR. MBAUNGURAHJE TJIKUZU

THIS QUESTION PAPER CONSISTS OF 6 PAGES

(Excluding this front page)

INSTRUCTIONS

1. Answer ALL the questions on the answer scripts.

Write clearly and neatly.

3. Number the answers clearly.

PERMISSIBLE MATERIALS

1. Calculator.

Section A: (Multiple choice) (25 Marks)

1. computing refers to applications and services that run on a distributed network

using virtualized resources.

a) Distributed

b) Cloud

c) Docker

d) Parallel

2. Which of the following is essential concept related to Cloud?

a) Reliability

b) Productivity

c) Abstraction

d) All of the mentioned

3. Point out the wrong statement :

a) All applications benefit from deployment in the cloud

b) With cloud computing, you can start very small and become big very fast

c) Cloud computing is revolutionary, even if the technology it is built on is evolutionary

d) None of the mentioned

4. Which of the following cloud concept is related to pooling and sharing of resources?

a) Polymorphism

b) Abstraction

c) Virtualization


5. Cloud computing is an abstraction based on the notion of pooling physical resources and

presenting them as a resource.

a) real

b) virtual

c) cloud

d) none of the mentioned

6. Which of the following is Cloud Platform by Amazon?

a) Azure

b) AWS

c) Cloudera


7. refers to the location and management of the cloud’s infrastructure.

a) Service

b) Deployment

c) Application


8.

10.

11.

12.

13.

14.

15.

4. Which of the following is deployment model?

a) public

b) private

c) hybrid

d) all of the mentioned

Which of the following is best known service model?

a) SaaS

b) laaS

c) PaaS


Model attempts to categorize a cloud network based on four dimensional factors.

a) Cloud Square

b) Cloud Service

c) Cloud Cube


How many types of dimensions exists in Cloud Cube Model?

a)1

b) 2

c)3

d) 4

Which of the following dimension is related to organization’s boundaries?

a) Physical location of data

b) Ownership

c) Security boundary


Which of the following is provided by ownership dimension of Cloud Cube Model?

a) Proprietary

b) Owner

c) Security ownership


The cloud infrastructure is operated for the exclusive use of an organization.

a) Public

b) Private

c) Community


cloud is one where the cloud has been organized to serve a common function

or purpose.

a) Public

b) Private

c) Community


16.

17.

18.

19.

20.

21.

22.

Which of the following is most important area of concern in cloud computing?

a) Security

b) Storage

c) Scalability


You can’t count on a cloud provider maintaining you’re__in the face of government

actions.

a) scalability

b) reliability

c) privacy


Which of the following is a virtual machine technology now owned by Oracle that can run

various operating systems?

a) Vmachines

b) VirtualBox

c) ThoughtPolice


as a Service is a cloud computing infrastructure that creates a development

environment upon which applications may be build.

a) Infrastructure

b) Service

c) Platform


is a cloud computing service model in which hardware is virtualized in the cloud.

a) laaS

b) CaaS

c) PaaS


SaaS supports multiple users and provides a shared data model through__————Cs model.

a) single-tenancy

b) multi-tenancy

c) multiple-instance

d) all of the mentioned

Which of the following type of virtualization is also characteristic of cloud computing?

a) Storage

b) Application

c) CPU


23.

24.

25.

Which of the following type of virtualization is found in hypervisor such as Microsoft's

Hyper-V?

a) paravirtualization

b) full virtualization

c) emulation


Your colleague has accidentally allocated more vRAM than your company are licensed for.

What will happen to your virtual machines?

A. All VM’s will be powered Off

B. New VM’s cannot be Powered On

C. VMware will be notified

D. Nothing will happen

What is the command used to convert a container into an image?

a) docker push

b) docker commit

c) docker run

d) docker dif

Section B: True or False [5 Marks]

1. Snapshots are another alternative to backing up virtual machines

True

False

2. The main objective of network virtualization is to abstract network services into a virtual

network.

True

False

3. In storage virtualization logical to physical storage mapping is performed by physical layer

True

False

4. Instorage virtualization virtual volumes are created from a single storage device and

assigned to the compute system.

True

False

5. Windows server growth drove datacentre growth

True

False

Section C [35 marks]

1) In virtualization, what can be cloned, upgraded, and even moved from place to place,

without ever having to disrupt the user applications? (1 Mark]

2) Name and explain two features that are used to multiply Virtual Machines [4 marks]

3) System virtualization can be achieved through three virtualization techniques, name them

[3 Marks]

4) Using a diagram, illustrate the scope of control for software as a service (SaaS) [4 Marks]

5) What do you understand by the term Consolidation Ratio? [2 Marks]

6) what is the difference between hot and cold cloning [2 Marks]

7) Hypervisor uses two file systems to manage the VM files, name them [2 marks]

8) You are a DEVOPS engineer for company XYZ, what command will you run if you want to run

a website in docker container in the back ground with the following conditions. [4 Marks]

a. Using httpd image

b. The location for index.html file is /webdata

Gc; Port number 1321

d. Container name is web

9) What do you understand by the term Thin Pool Rebalancing? {2 Marks]

10) What do you understand by the term Virtual Provisioning? [2 Marks]

11) Analyse the following Diagram A and answer the questions which follows. This

Diagram is a screen shot from a Docker daemon. TKS IMAGE ID CREATED

[reese 09acl1/74d/ffb 5 days ago docker.io/httpd latest d4a07 e6ce470 12 days ago docker.io/centos a Faas ae 9f38484d220F 4 weeks ago docker.io/ubuntu jF-Ga-ton 94e814e2efa8 4 weeks ago docker.i0/sequencei q/hadoop-docker latest 5¢e3ccl1/0c6bc 3 years ago [root@localhost ~]#

Diagram A

a. Which command was typed to show the above screen shot? [2 Marks]

b. What command will you run if you want to remove docker.io/centos? [2 Marka]

c. What is the Docker command to run a container in a background (detached) mode

without allocating the TTY to it, not keeping STDIN open, using an Ubuntu image and

get the bash shell in the container? [2 Marks]

12) What is the function of the inventory file in Ansible? [2 Marks]

13) How Many Minimum Disk Drives Are Needed For Raid 1? [1 Mark]

=

Q—

Good luck!!

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